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http://dx.doi.org/10.7855/IJHE.2018.20.4.001

Effect of Thermal Segregation Reduction in Asphalt Paving with MTV  

Kweon, Gichul (Department of Civil Engineering, Dongeui University)
Publication Information
International Journal of Highway Engineering / v.20, no.4, 2018 , pp. 1-6 More about this Journal
Abstract
PURPOSES : The objective of this study is to evaluate of the effect of thermal segregation reduction in asphalt paving using material transfer vehicles (MTVs). METHODS : Asphalt paving using MTVs was carried out, and the paved surface temperature was measured using an infrared camera. The amount of thermal segregation was estimated from temperature variations. RESULTS : The transportation of hot mix asphalt (HMA) using dump trucks caused temperature segregation that persisted in the paving surface if an MTV was not used. The average temperature variation was 8.58% in paved surfaces where an MTV was not used. However, the temperature variation was 3.10%, 2.86%, and 4.53% for the base layer, inter-layer, and surface layer, respectively, when an MTV was used. CONCLUSIONS : The use of an MTV in asphalt paving reduces thermal segregation approximately 2.3 times in an asphalt mat via a remixing process and also allows for a smoother work process because the paver never needs to stop to receive HMA. However, MTV equipment without pre-heating devices requires careful temperature control during the warm up process at the MTV during construction in the winter.
Keywords
thermal segregation; MTV; asphalt paving; infrared camera; continuous paving;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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